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学者姓名：曹东兴
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Abstract ：
A broad-speed-range operational capability coupled with both subsonic and supersonic flight performances is a key factor for new aircraft design. The joined-wing configuration has higher bending torsional strength, lower induced resistance, larger lift coefficient, and better stability in comparison to traditional wing configuration. A new morphing joined-wing aircraft that featured a retractable wing installed in the front wing was designed in the present work to satisfy the transition between the joined-wing and box-wing configurations, thereby attaining transonic flight capability across a wide range of speeds. The simulation models of the joined-wing and box-wing configurations were built based on the JW-1 model, and the flight characteristics of the aircraft under different flow field speeds were studied based on the Spalart-Allmaras turbulence model. The effects of different parameters on the morphing aircraft under subsonic and supersonic conditions were analyzed, and the flight performance of the morphing joined-wing aircraft was compared with those of conventional aircraft wing configurations. This study provides valuable insights into the optimization of supersonic flight for the joinedwing aircraft.
Keyword ：
Transonic flight Transonic flight Design optimization Design optimization Aerodynamic performance Aerodynamic performance Joined-wing aircraft Joined-wing aircraft
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| GB/T 7714 | Guo, Xiangying , Wang, Zhen , Lu, Kuan et al. Design and aerodynamic analysis of a morphing joined-wing aircraft with transonic flight capability [J]. | AEROSPACE SCIENCE AND TECHNOLOGY , 2025 , 159 . |
| MLA | Guo, Xiangying et al. "Design and aerodynamic analysis of a morphing joined-wing aircraft with transonic flight capability" . | AEROSPACE SCIENCE AND TECHNOLOGY 159 (2025) . |
| APA | Guo, Xiangying , Wang, Zhen , Lu, Kuan , Cao, Dongxing . Design and aerodynamic analysis of a morphing joined-wing aircraft with transonic flight capability . | AEROSPACE SCIENCE AND TECHNOLOGY , 2025 , 159 . |
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Abstract ：
Particle damping technology is a widely used passive vibration control method known for its simplicity and efficiency in engineering applications. This study applies a Particle Damper (PD) to reduce low-frequency vibrations in a manipulator. A novel coupled dynamic model of the PD and manipulator is developed, considering the impact of low-frequency vibrations. To address the challenges posed by the nonlinear behavior of particles, Discrete Element Method (DEM) simulations using EDEM software are performed to investigate the effects of key factors, such as particle packing density, diameter, and material composition, on energy dissipation. The simulation results are validated through experiments, with the manipulator serving as the controlled object to assess the PD's control performance. The PD design is further refined by incorporating multi-layer baffles, which enhance energy dissipation and improve the suppression of vibrations. The results demonstrate that the optimized PD system effectively reduces the manipulator's low-frequency vibration response. By integrating simulations, experimental validation, and structural optimization, this study provides deeper insights into particle damping mechanisms and offers innovative solutions for vibration control in manipulators and similar engineering systems.
Keyword ：
particle damper particle damper Vibration control Vibration control manipulator manipulator damping damping
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| GB/T 7714 | Zhu, Yunan , Guo, Xiangying , Cao, Dongxing . Research on Vibration Control of Manipulator Using Particle Damper [J]. | INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS , 2025 . |
| MLA | Zhu, Yunan et al. "Research on Vibration Control of Manipulator Using Particle Damper" . | INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS (2025) . |
| APA | Zhu, Yunan , Guo, Xiangying , Cao, Dongxing . Research on Vibration Control of Manipulator Using Particle Damper . | INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS , 2025 . |
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Abstract ：
Advanced aircrafts have incorporated bio-inspired morphing structures to adapt to multienvironment and perform multimission. But it will cause serious issues with structural reliability and aeroelastic stability. This paper studies the critical flutter speed of a morphing wing structure and evaluates the deformation strategies. First, a biomimetic wing is considered as a variable cross-section cantilever beam, and the flutter model with Theodorsen unsteady aerodynamics is theoretically derived. The finite element theory is used to discretize the obtained PDEs with variable coefficients. Second, three typical wing models are examined to verify the model's accuracy against finite element simulation findings for modal frequencies and critical flutter speeds. The results indicate good agreement, with errors of less than 3% for modal frequencies and fewer than 2.1% for critical flutter speeds. Thirdly, the flutter wind speeds are examined to assess the aeroelasticity properties for three different morphing strategies of biomimetic wing structures. The findings show that both forward bending of the elastic axis and greater density concentration near the wing root increase flutter speed. And the density distribution has a smaller effect on flutter speed than elastic axis bending. When it comes to static aeroelasticity, excessive folding ratios cause divergence problems.
Keyword ：
Unsteady Aerodynamics Unsteady Aerodynamics Aircraft Wing Components Aircraft Wing Components Aeroelastic Instability Aeroelastic Instability Structural Reliability Analysis Structural Reliability Analysis Structural Dynamics and Characterization Structural Dynamics and Characterization Aircraft Wing Design Aircraft Wing Design Unsteady Aerodynamic Modeling Unsteady Aerodynamic Modeling Aerodynamic Performance Aerodynamic Performance
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| GB/T 7714 | Cao, Dongxing , Gao, Chi , Zhou, Xinxing et al. Flutter Analysis and Morphing Evaluation of Biomimetic Wing Structure [J]. | AIAA JOURNAL , 2024 . |
| MLA | Cao, Dongxing et al. "Flutter Analysis and Morphing Evaluation of Biomimetic Wing Structure" . | AIAA JOURNAL (2024) . |
| APA | Cao, Dongxing , Gao, Chi , Zhou, Xinxing , Zhou, Yiwei , Wang, Jianfei , Guo, Xiangying . Flutter Analysis and Morphing Evaluation of Biomimetic Wing Structure . | AIAA JOURNAL , 2024 . |
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Abstract ：
Sandwich plate structures are extensively utilized in engineering due to their favorable stiffness-to-weight ratio. Nonetheless, these lightweight thin-walled structures frequently encounter challenges related to inadequate lowfrequency vibration performance, which significantly restricts their applications, particularly in the realm of precision instruments which is sensitive to vibration. This study introduces an innovative design of an active nonlinear metamaterial, to achieve tunable broadband low-frequency bandgaps for sandwich plates. The nonlinear oscillator incorporates an inertia amplification mechanism (IAM), Euler-buckled beams, mass elements, and magneto-rheological elastomers (MREs), which are modulated via external magnetic fields to adjust the material's stiffness dynamically. Employing Hamilton's principles and the plate wave expansion method (PWE), the dispersion relations for the metamaterial plate are derived, elucidating the dispersion surfaces and the band structures within its sandwich-like plates. The dynamical equations of the metamaterial plate are formulated and validated through numerical simulations using the Galerkin method, confirming the theoretical predictions. The results demonstrate effective control over low-frequency and broadband bandgaps under low mass ratio conditions through strategic manipulation of the inertia amplification factor and magnetic flux. The study extensively explores the nonlinear dynamic responses of the metamaterial, highlighting the significant impact of excitation amplitudes on the amplitudedependent bandgaps.
Keyword ：
Inertia amplification mechanism Inertia amplification mechanism Nonlinear metamaterials Nonlinear metamaterials Low-frequency bandgap control Low-frequency bandgap control Magneto-rheological elastomers (MRE) Magneto-rheological elastomers (MRE)
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| GB/T 7714 | Yang, Dongshuo , Guo, Xiangying , Zhang, Weixing et al. Non-linear dynamics and bandgap control in magneto-rheological elastomers metamaterials with inertial amplification [J]. | THIN-WALLED STRUCTURES , 2024 , 204 . |
| MLA | Yang, Dongshuo et al. "Non-linear dynamics and bandgap control in magneto-rheological elastomers metamaterials with inertial amplification" . | THIN-WALLED STRUCTURES 204 (2024) . |
| APA | Yang, Dongshuo , Guo, Xiangying , Zhang, Weixing , Cao, Dongxing . Non-linear dynamics and bandgap control in magneto-rheological elastomers metamaterials with inertial amplification . | THIN-WALLED STRUCTURES , 2024 , 204 . |
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Abstract ：
Tuned particle dampers (TPDs) are recognized for their innovative approach to nonlinear energy dissipation, maintaining the dynamic characteristics of the systems they protect. However, the inherent complexity of particle system nonlinearities poses substantial challenges in developing accurate dynamical models. Traditional analysis methods are inadequate in addressing the dynamic characteristics of such complex coupled systems. This study introduces a novel integration of multibody dynamics with discrete element methods through a bidirectional coupling approach to a comprehensive model of the TPD system. Then, extensive investigations into the system's responses and its vibration control efficacy under diverse external forces and frequencies are conducted, and the energy dissipation attributes and dynamic adjustments are also delved into system mass. Given the extensive simulation times and substantial resource demands of such systems, a neural network-based predictive model has been devised to forecast the vibration absorption capabilities of TPDs, offering essential insights that enhance engineering applications.
Keyword ：
Nonlinear energy dissipation Nonlinear energy dissipation Tuned particle damper Tuned particle damper Co-simulation Co-simulation Neural networks Neural networks
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| GB/T 7714 | Guo, Xiangying , Zhu, Yunan , Cao, Dongxing . Dynamic design and performance prediction of tuned particle dampers based on co-simulation [J]. | NONLINEAR DYNAMICS , 2024 , 113 (4) : 3053-3077 . |
| MLA | Guo, Xiangying et al. "Dynamic design and performance prediction of tuned particle dampers based on co-simulation" . | NONLINEAR DYNAMICS 113 . 4 (2024) : 3053-3077 . |
| APA | Guo, Xiangying , Zhu, Yunan , Cao, Dongxing . Dynamic design and performance prediction of tuned particle dampers based on co-simulation . | NONLINEAR DYNAMICS , 2024 , 113 (4) , 3053-3077 . |
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Abstract ：
This research proposes a novel type of variable stiffness tuned particle damper (TPD) for reducing vibrations in boring bars. The TPD integrates the developments of particle damping and dynamical vibration absorber, whose frequency tuning principle is established through an equivalent theoretical model. Based on the multiphase flow theory of gas-solid, it is effective to obtain the equivalent damping and stiffness of the particle damping. The dynamic equations of the coupled system, consisting of a boring bar with the TPD, are built by Hamilton's principle. The vibration suppression of the TPD is assessed by calculating the amplitude responses of the boring bar both with and without the TPD by the Newmark-beta algorithm. Moreover, an improvement is proposed to the existing gas-solid flow theory, and a comparative analysis of introducing the stiffness term on the damping effect is presented. The parameters of the TPD are optimized by the genetic algorithm, and the results indicate that the optimized TPD effectively reduces the peak response of the boring bar system.
Keyword ：
vibration control vibration control tuned particle damper (TPD) tuned particle damper (TPD) O32 O32 variable stiffness variable stiffness particle particle
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| GB/T 7714 | Guo, Xiangying , Zhu, Yunan , Luo, Zhong et al. Variable stiffness tuned particle dampers for vibration control of cantilever boring bars [J]. | APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION , 2023 , 44 (12) : 2163-2186 . |
| MLA | Guo, Xiangying et al. "Variable stiffness tuned particle dampers for vibration control of cantilever boring bars" . | APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION 44 . 12 (2023) : 2163-2186 . |
| APA | Guo, Xiangying , Zhu, Yunan , Luo, Zhong , Cao, Dongxing , Yang, Jihou . Variable stiffness tuned particle dampers for vibration control of cantilever boring bars . | APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION , 2023 , 44 (12) , 2163-2186 . |
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Abstract ：
Track irregularities induce potential risks to the safety and stability of railway track systems. This paper proposes a novel methodology to identify vertical and lateral track irregularities. The method involves measuring system-based attitude calculation and a model-based unknown input observer estimator, based on the dynamic responses of distributed multi-sensors on the vehicle and bogie. First, a mechanical model of wheel-rail contacts is built with dynamic methods. The model considers the different directions of motion for a railway vehicle and consists of two bogies and four wheelsets. Based on the multi-sensor acceleration measurement, the vertical and lateral acceleration signals of the vehicle and bogies are integrated into the displacement signal. Then a state-space description of the vehicle suspension model is established for inverse dynamical analysis to extract the input signals. A suitable unknown input observer is constructed to estimate the track irregularities by transforming the state space equations of the vehicle into an augmented system that can monitor the track irregularities in-service. This method provides an opportunity to reduce the costs of the monitoring infrastructure and provide quicker and more reliable information about the status of a track.
Keyword ：
condition monitoring condition monitoring onboard measurements onboard measurements dynamic responses dynamic responses attitude calculation attitude calculation Track irregularity identification Track irregularity identification unknown input observer unknown input observer
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| GB/T 7714 | Guo, Xiangying , Li, Changkun , Luo, Zhong et al. Identification of track irregularities with the multi-sensor acceleration measurements of vehicle dynamic responses [J]. | VEHICLE SYSTEM DYNAMICS , 2023 , 62 (4) : 906-931 . |
| MLA | Guo, Xiangying et al. "Identification of track irregularities with the multi-sensor acceleration measurements of vehicle dynamic responses" . | VEHICLE SYSTEM DYNAMICS 62 . 4 (2023) : 906-931 . |
| APA | Guo, Xiangying , Li, Changkun , Luo, Zhong , Cao, Dongxing . Identification of track irregularities with the multi-sensor acceleration measurements of vehicle dynamic responses . | VEHICLE SYSTEM DYNAMICS , 2023 , 62 (4) , 906-931 . |
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Abstract ：
Sandwich structures possess a high stiffness-to-mass ratio, which facilitates flexural wave propagation at lower frequencies and enhances their vibration isolation and sound insulation capabilities, therefore, sandwich-like metamaterial plates with the nonlinear local oscillator is constructed in this paper to obtain adjustable bandgap in low-frequency. The buckling beam oscillator consists of a small mass, linear support spring, and buckling elastic elements for nonlinear stiffness. First, governing equations of flexural vibrations of plates are deduced based on the Hamilton principle. By utilizing the harmonic balance method (HBM), the dispersion relation of a sandwich-like plate can be determined. Theoretical analysis reveals the presence of structural bandgap ranges at lower frequencies, which are subject to the excitation amplitudes. And in order to validate the theoretical findings, the finite element method (FEM) is employed. Moreover, the influence of structural parameters, including oscillator mass, linear spring stiffness, buckling beam angle, and Young's modulus, are conducted to enhance the vibration control in the low-frequency. Interestingly, it is observed that the effectiveness of low-frequency suppression in the nonlinear metamaterial plate varies significantly across different boundary conditions. Therefore, the sandwich structures with nonlinear local oscillators can provide an effective way to suppress low-frequency vibration and maintain dynamic stability.
Keyword ：
Metamaterial plates Metamaterial plates buckling beam oscillator buckling beam oscillator nonlinear bandgap nonlinear bandgap vibration suppression vibration suppression
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| GB/T 7714 | Guo, Xiangying , Yang, Dongshuo , Zhang, Weixing et al. The Adjustable Bandgap of Novel Local Resonance Sandwich-Like Metamaterial Plates with Buckling Beam Oscillators [J]. | INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS , 2023 , 24 (21) . |
| MLA | Guo, Xiangying et al. "The Adjustable Bandgap of Novel Local Resonance Sandwich-Like Metamaterial Plates with Buckling Beam Oscillators" . | INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS 24 . 21 (2023) . |
| APA | Guo, Xiangying , Yang, Dongshuo , Zhang, Weixing , Cao, Dongxing . The Adjustable Bandgap of Novel Local Resonance Sandwich-Like Metamaterial Plates with Buckling Beam Oscillators . | INTERNATIONAL JOURNAL OF STRUCTURAL STABILITY AND DYNAMICS , 2023 , 24 (21) . |
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Abstract ：
针对空间桁架天线的结构特点,基于能量等效原理分别建立了不带底板和带底板的空间桁架结构的等效梁连续体模型.将胞元横截面上任意点的位移用横截面中心处的位移分量线性表示,求得胞元的应变能和动能;基于能量等效原理利用哈密顿原理建立桁架天线结构的等效连续体动力学方程,求解得到等效连续体模型的固有频率和振型表达式;利用有限元方法对桁架结构进行仿真分析,并将仿真结果与等效连续体模型计算结果进行对比分析.结果表明,等效模型结果具有较好的精度,从而验证了等效连续体梁模型的正确性.研究结果可为大型空间可展桁架结构的动力学设计提供论支撑.
Keyword ：
空间桁架 空间桁架 固有振动 固有振动 能量等效 能量等效 等效连续体模型 等效连续体模型
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| GB/T 7714 | 曹东兴 , 秦源 , 孙杰 et al. 空间桁架结构等效连续体建模及固有特性分析 [J]. | 应用力学学报 , 2023 , 40 (2) : 282-293 . |
| MLA | 曹东兴 et al. "空间桁架结构等效连续体建模及固有特性分析" . | 应用力学学报 40 . 2 (2023) : 282-293 . |
| APA | 曹东兴 , 秦源 , 孙杰 , 朱东方 , 胡文华 . 空间桁架结构等效连续体建模及固有特性分析 . | 应用力学学报 , 2023 , 40 (2) , 282-293 . |
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Abstract ：
随着大型装备制造及航天工程的发展，桁架在结构轻量化设计中的作用越来越显著。针对桁架结构各方向上不同的承载需求，利用连续体等效方法研究了三棱直线桁架的承载特性。考虑桁架截面特征，基于能量等效原则将离散桁架等效为连续介质梁模型，获得连续介质梁模型的等效刚度和等效质量，对比验证了桁架结构的数值计算频率和等效梁模型的理论推导结果，研究了在改变桁架横截面边长比例时其横向弯曲刚度和频率的变化趋势，分析了单胞形式对桁架横向弯曲刚度及频率的影响。研究结论对桁架结构在工程中的应用有一定的指导意义。
Keyword ：
三棱直线桁架 三棱直线桁架 等效 等效 承载特性 承载特性 频率 频率 连续体 连续体
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| GB/T 7714 | 胡文华 , 高家旺 , 冯晶晶 et al. 三棱直线桁架的连续体等效及承载特性研究 [J]. | 工程力学 , 2023 , 40 (3) : 238-244 . |
| MLA | 胡文华 et al. "三棱直线桁架的连续体等效及承载特性研究" . | 工程力学 40 . 3 (2023) : 238-244 . |
| APA | 胡文华 , 高家旺 , 冯晶晶 , 朱东方 , 曹东兴 , 吴瑞琴 . 三棱直线桁架的连续体等效及承载特性研究 . | 工程力学 , 2023 , 40 (3) , 238-244 . |
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